@openfeature/core - npm Package Compare versions

Comparing version 1.2.0 to 1.3.0

dist/cjs/index.js

 "use strict";
 var __defProp = Object.defineProperty;
+var __defProps = Object.defineProperties;
 var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropDescs = Object.getOwnPropertyDescriptors;
 var __getOwnPropNames = Object.getOwnPropertyNames;
+var __getOwnPropSymbols = Object.getOwnPropertySymbols;
 var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __propIsEnum = Object.prototype.propertyIsEnumerable;
+var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
+var __spreadValues = (a, b) => {
+  for (var prop in b || (b = {}))
+    if (__hasOwnProp.call(b, prop))
+      __defNormalProp(a, prop, b[prop]);
+  if (__getOwnPropSymbols)
+    for (var prop of __getOwnPropSymbols(b)) {
+      if (__propIsEnum.call(b, prop))
+        __defNormalProp(a, prop, b[prop]);
+    }
+  return a;
+};
+var __spreadProps = (a, b) => __defProps(a, __getOwnPropDescs(b));
 var __export = (target, all) => {
@@ -19,2 +36,22 @@ for (var name in all)
 var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+var __async = (__this, __arguments, generator) => {
+  return new Promise((resolve, reject) => {
+    var fulfilled = (value) => {
+      try {
+        step(generator.next(value));
+      } catch (e) {
+        reject(e);
+      }
+    };
+    var rejected = (value) => {
+      try {
+        step(generator.throw(value));
+      } catch (e) {
+        reject(e);
+      }
+    };
+    var step = (x) => x.done ? resolve(x.value) : Promise.resolve(x.value).then(fulfilled, rejected);
+    step((generator = generator.apply(__this, __arguments)).next());
+  });
+};
 
@@ -112,5 +149,6 @@ // src/index.ts
   constructor(message, options) {
-    super(message, options);
+    super(message);
     Object.setPrototypeOf(this, _OpenFeatureError.prototype);
     this.name = "OpenFeatureError";
+    this.cause = options == null ? void 0 : options.cause;
   }
@@ -121,3 +159,2 @@ };
 var FlagNotFoundError = class _FlagNotFoundError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -133,3 +170,2 @@ super(message, options);
 var GeneralError = class _GeneralError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -145,3 +181,2 @@ super(message, options);
 var InvalidContextError = class _InvalidContextError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -157,3 +192,2 @@ super(message, options);
 var ParseError = class _ParseError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -169,3 +203,2 @@ super(message, options);
 var ProviderFatalError = class _ProviderFatalError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -181,3 +214,2 @@ super(message, options);
 var ProviderNotReadyError = class _ProviderNotReadyError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -193,3 +225,2 @@ super(message, options);
 var TargetingKeyMissingError = class _TargetingKeyMissingError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -205,3 +236,2 @@ super(message, options);
 var TypeMismatchError = class _TypeMismatchError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -304,5 +334,4 @@ super(message, options);
 var SafeLogger = class {
-  logger;
-  fallbackLogger = new DefaultLogger();
   constructor(logger) {
+    this.fallbackLogger = new DefaultLogger();
     try {
@@ -346,12 +375,11 @@ for (const level of LOG_LEVELS) {
     this.globalLogger = globalLogger;
+    this._handlers = {
+      ["PROVIDER_CONFIGURATION_CHANGED" /* ConfigurationChanged */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_CONTEXT_CHANGED" /* ContextChanged */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_READY" /* Ready */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_ERROR" /* Error */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_STALE" /* Stale */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_RECONCILING" /* Reconciling */]: /* @__PURE__ */ new WeakMap()
+    };
   }
-  _handlers = {
-    ["PROVIDER_CONFIGURATION_CHANGED" /* ConfigurationChanged */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_CONTEXT_CHANGED" /* ContextChanged */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_READY" /* Ready */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_ERROR" /* Error */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_STALE" /* Stale */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_RECONCILING" /* Reconciling */]: /* @__PURE__ */ new WeakMap()
-  };
-  _eventLogger;
   // here we use E, to restrict the events a provider can manually emit (PROVIDER_CONTEXT_CHANGED is emitted by the SDK)
@@ -362,9 +390,10 @@ emit(eventType, context) {
   addHandler(eventType, handler) {
-    const asyncHandler = async (details) => {
+    const asyncHandler = (details) => __async(this, null, function* () {
+      var _a;
       try {
-        await handler(details);
+        yield handler(details);
       } catch (err) {
-        this._logger?.error("Error running event handler:", err);
+        (_a = this._logger) == null ? void 0 : _a.error("Error running event handler:", err);
       }
-    };
+    });
     const existingAsyncHandlers = this._handlers[eventType].get(handler);
@@ -398,3 +427,4 @@ this._handlers[eventType].set(handler, [...existingAsyncHandlers || [], asyncHandler]);
   get _logger() {
-    return this._eventLogger ?? this.globalLogger?.();
+    var _a, _b;
+    return (_b = this._eventLogger) != null ? _b : (_a = this.globalLogger) == null ? void 0 : _a.call(this);
   }
@@ -427,10 +457,12 @@ };
     this._status = _status;
-    _provider.events?.addHandler("PROVIDER_READY" /* Ready */, () => {
+    this._pendingContextChanges = 0;
+    var _a, _b, _c;
+    (_a = _provider.events) == null ? void 0 : _a.addHandler("PROVIDER_READY" /* Ready */, () => {
       this._status = _statusEnumType.READY;
     });
-    _provider.events?.addHandler("PROVIDER_STALE" /* Stale */, () => {
+    (_b = _provider.events) == null ? void 0 : _b.addHandler("PROVIDER_STALE" /* Stale */, () => {
       this._status = _statusEnumType.STALE;
     });
-    _provider.events?.addHandler("PROVIDER_ERROR" /* Error */, (details) => {
-      if (details?.errorCode === "PROVIDER_FATAL" /* PROVIDER_FATAL */) {
+    (_c = _provider.events) == null ? void 0 : _c.addHandler("PROVIDER_ERROR" /* Error */, (details) => {
+      if ((details == null ? void 0 : details.errorCode) === "PROVIDER_FATAL" /* PROVIDER_FATAL */) {
         this._status = _statusEnumType.FATAL;
@@ -442,3 +474,2 @@ } else {
   }
-  _pendingContextChanges = 0;
   get provider() {
@@ -467,10 +498,9 @@ return this._provider;
 var OpenFeatureCommonAPI = class {
-  _hooks = [];
-  _context = {};
-  _logger = new DefaultLogger();
-  _clientEventHandlers = /* @__PURE__ */ new Map();
-  _domainScopedContext = /* @__PURE__ */ new Map();
-  _clientEvents = /* @__PURE__ */ new Map();
-  _runsOn;
   constructor(category) {
+    this._hooks = [];
+    this._context = {};
+    this._logger = new DefaultLogger();
+    this._clientEventHandlers = /* @__PURE__ */ new Map();
+    this._domainScopedContext = /* @__PURE__ */ new Map();
+    this._clientEvents = /* @__PURE__ */ new Map();
     this._runsOn = category;
@@ -518,2 +548,3 @@ }
     [.../* @__PURE__ */ new Map([[void 0, this._defaultProvider]]), ...this._domainScopedProviders].forEach((keyProviderTuple) => {
+      var _a;
       const domain = keyProviderTuple[0];
@@ -527,3 +558,3 @@ const provider = keyProviderTuple[1].provider;
         } catch (err) {
-          this._logger?.error("Error running event handler:", err);
+          (_a = this._logger) == null ? void 0 : _a.error("Error running event handler:", err);
         }
@@ -557,4 +588,5 @@ }
   setAwaitableProvider(domainOrProvider, providerOrUndefined) {
+    var _a, _b, _c, _d, _e, _f, _g, _h;
     const domain = stringOrUndefined(domainOrProvider);
-    const provider = objectOrUndefined(domainOrProvider) ?? objectOrUndefined(providerOrUndefined);
+    const provider = (_a = objectOrUndefined(domainOrProvider)) != null ? _a : objectOrUndefined(providerOrUndefined);
     if (!provider) {
@@ -583,10 +615,12 @@ this._logger.debug("No provider defined, ignoring setProvider call");
     if (typeof provider.initialize === "function" && !this.allProviders.includes(provider)) {
-      initializationPromise = provider.initialize?.(domain ? this._domainScopedContext.get(domain) ?? this._context : this._context)?.then(() => {
+      initializationPromise = (_e = (_d = (_c = provider.initialize) == null ? void 0 : _c.call(provider, domain ? (_b = this._domainScopedContext.get(domain)) != null ? _b : this._context : this._context)) == null ? void 0 : _d.then(() => {
+        var _a2;
         wrappedProvider.status = this._statusEnumType.READY;
         this.getAssociatedEventEmitters(domain).forEach((emitter) => {
-          emitter?.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
+          emitter == null ? void 0 : emitter.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
         });
-        this._apiEmitter?.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
-      })?.catch((error) => {
-        if (error?.code === "PROVIDER_FATAL" /* PROVIDER_FATAL */) {
+        (_a2 = this._apiEmitter) == null ? void 0 : _a2.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
+      })) == null ? void 0 : _e.catch((error) => {
+        var _a2;
+        if ((error == null ? void 0 : error.code) === "PROVIDER_FATAL" /* PROVIDER_FATAL */) {
           wrappedProvider.status = this._statusEnumType.FATAL;
@@ -597,14 +631,14 @@ } else {
         this.getAssociatedEventEmitters(domain).forEach((emitter) => {
-          emitter?.emit("PROVIDER_ERROR" /* Error */, {
+          emitter == null ? void 0 : emitter.emit("PROVIDER_ERROR" /* Error */, {
             clientName: domain,
             domain,
             providerName,
-            message: error?.message
+            message: error == null ? void 0 : error.message
           });
         });
-        this._apiEmitter?.emit("PROVIDER_ERROR" /* Error */, {
+        (_a2 = this._apiEmitter) == null ? void 0 : _a2.emit("PROVIDER_ERROR" /* Error */, {
           clientName: domain,
           domain,
           providerName,
-          message: error?.message
+          message: error == null ? void 0 : error.message
         });
@@ -616,5 +650,5 @@ throw error;
       emitters.forEach((emitter) => {
-        emitter?.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
+        emitter == null ? void 0 : emitter.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
       });
-      this._apiEmitter?.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
+      (_f = this._apiEmitter) == null ? void 0 : _f.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
     }
@@ -628,4 +662,4 @@ if (domain) {
     if (!this.allProviders.includes(oldProvider)) {
-      oldProvider?.onClose?.()?.catch((err) => {
-        this._logger.error(`error closing provider: ${err?.message}, ${err?.stack}`);
+      (_h = (_g = oldProvider == null ? void 0 : oldProvider.onClose) == null ? void 0 : _g.call(oldProvider)) == null ? void 0 : _h.catch((err) => {
+        this._logger.error(`error closing provider: ${err == null ? void 0 : err.message}, ${err == null ? void 0 : err.stack}`);
       });
@@ -636,6 +670,7 @@ }
   getProviderForClient(domain) {
+    var _a, _b;
     if (!domain) {
       return this._defaultProvider.provider;
     }
-    return this._domainScopedProviders.get(domain)?.provider ?? this._defaultProvider.provider;
+    return (_b = (_a = this._domainScopedProviders.get(domain)) == null ? void 0 : _a.provider) != null ? _b : this._defaultProvider.provider;
   }
@@ -651,10 +686,12 @@ buildAndCacheEventEmitterForClient(domain) {
     Object.values(ClientProviderEvents).forEach(
-      (eventType) => clientProvider.events?.addHandler(eventType, async (details) => {
-        newEmitter.emit(eventType, {
-          ...details,
-          clientName: domain,
-          domain,
-          providerName: clientProvider.metadata.name
-        });
-      })
+      (eventType) => {
+        var _a;
+        return (_a = clientProvider.events) == null ? void 0 : _a.addHandler(eventType, (details) => __async(this, null, function* () {
+          newEmitter.emit(eventType, __spreadProps(__spreadValues({}, details), {
+            clientName: domain,
+            domain,
+            providerName: clientProvider.metadata.name
+          }));
+        }));
+      }
     );
@@ -678,51 +715,63 @@ return newEmitter;
   transferListeners(oldProvider, newProvider, domain, emitters) {
-    this._clientEventHandlers.get(domain)?.forEach((eventHandler) => oldProvider.events?.removeHandler(...eventHandler));
+    var _a;
+    (_a = this._clientEventHandlers.get(domain)) == null ? void 0 : _a.forEach((eventHandler) => {
+      var _a2;
+      return (_a2 = oldProvider.events) == null ? void 0 : _a2.removeHandler(...eventHandler);
+    });
     const newClientHandlers = Object.values(ClientProviderEvents).map((eventType) => {
-      const handler = async (details) => {
+      const handler = (details) => __async(this, null, function* () {
         emitters.forEach((emitter) => {
-          emitter?.emit(eventType, { ...details, clientName: domain, domain, providerName: newProvider.metadata.name });
+          emitter == null ? void 0 : emitter.emit(eventType, __spreadProps(__spreadValues({}, details), { clientName: domain, domain, providerName: newProvider.metadata.name }));
         });
-        this._apiEmitter.emit(eventType, {
-          ...details,
+        this._apiEmitter.emit(eventType, __spreadProps(__spreadValues({}, details), {
           clientName: domain,
           domain,
           providerName: newProvider.metadata.name
-        });
-      };
+        }));
+      });
       return [eventType, handler];
     });
     this._clientEventHandlers.set(domain, newClientHandlers);
-    newClientHandlers.forEach((eventHandler) => newProvider.events?.addHandler(...eventHandler));
+    newClientHandlers.forEach((eventHandler) => {
+      var _a2;
+      return (_a2 = newProvider.events) == null ? void 0 : _a2.addHandler(...eventHandler);
+    });
   }
-  async close() {
-    try {
-      await this?._defaultProvider.provider?.onClose?.();
-    } catch (err) {
-      this.handleShutdownError(this._defaultProvider.provider, err);
-    }
-    const wrappers = Array.from(this._domainScopedProviders);
-    await Promise.all(
-      wrappers.map(async ([, wrapper]) => {
-        try {
-          await wrapper?.provider.onClose?.();
-        } catch (err) {
-          this.handleShutdownError(wrapper?.provider, err);
-        }
-      })
-    );
-  }
-  async clearProvidersAndSetDefault(defaultProvider) {
-    try {
-      await this.close();
-    } catch (err) {
-      this._logger.error("Unable to cleanly close providers. Resetting to the default configuration.");
-    } finally {
-      this._domainScopedProviders.clear();
-      this._defaultProvider = new ProviderWrapper(
-        defaultProvider,
-        this._statusEnumType.NOT_READY,
-        this._statusEnumType
+  close() {
+    return __async(this, null, function* () {
+      var _a, _b;
+      try {
+        yield (_b = (_a = this == null ? void 0 : this._defaultProvider.provider) == null ? void 0 : _a.onClose) == null ? void 0 : _b.call(_a);
+      } catch (err) {
+        this.handleShutdownError(this._defaultProvider.provider, err);
+      }
+      const wrappers = Array.from(this._domainScopedProviders);
+      yield Promise.all(
+        wrappers.map((_0) => __async(this, [_0], function* ([, wrapper]) {
+          var _a2, _b2;
+          try {
+            yield (_b2 = wrapper == null ? void 0 : (_a2 = wrapper.provider).onClose) == null ? void 0 : _b2.call(_a2);
+          } catch (err) {
+            this.handleShutdownError(wrapper == null ? void 0 : wrapper.provider, err);
+          }
+        }))
       );
-    }
+    });
   }
+  clearProvidersAndSetDefault(defaultProvider) {
+    return __async(this, null, function* () {
+      try {
+        yield this.close();
+      } catch (err) {
+        this._logger.error("Unable to cleanly close providers. Resetting to the default configuration.");
+      } finally {
+        this._domainScopedProviders.clear();
+        this._defaultProvider = new ProviderWrapper(
+          defaultProvider,
+          this._statusEnumType.NOT_READY,
+          this._statusEnumType
+        );
+      }
+    });
+  }
   get allProviders() {
@@ -736,5 +785,5 @@ return [
     this._logger.error(`Error during shutdown of provider ${provider.metadata.name}: ${err}`);
-    this._logger.error(err?.stack);
+    this._logger.error(err == null ? void 0 : err.stack);
   }
 };
 //# sourceMappingURL=index.js.map

dist/esm/index.js

@@ -0,1 +1,41 @@
+var __defProp = Object.defineProperty;
+var __defProps = Object.defineProperties;
+var __getOwnPropDescs = Object.getOwnPropertyDescriptors;
+var __getOwnPropSymbols = Object.getOwnPropertySymbols;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __propIsEnum = Object.prototype.propertyIsEnumerable;
+var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
+var __spreadValues = (a, b) => {
+  for (var prop in b || (b = {}))
+    if (__hasOwnProp.call(b, prop))
+      __defNormalProp(a, prop, b[prop]);
+  if (__getOwnPropSymbols)
+    for (var prop of __getOwnPropSymbols(b)) {
+      if (__propIsEnum.call(b, prop))
+        __defNormalProp(a, prop, b[prop]);
+    }
+  return a;
+};
+var __spreadProps = (a, b) => __defProps(a, __getOwnPropDescs(b));
+var __async = (__this, __arguments, generator) => {
+  return new Promise((resolve, reject) => {
+    var fulfilled = (value) => {
+      try {
+        step(generator.next(value));
+      } catch (e) {
+        reject(e);
+      }
+    };
+    var rejected = (value) => {
+      try {
+        step(generator.throw(value));
+      } catch (e) {
+        reject(e);
+      }
+    };
+    var step = (x) => x.done ? resolve(x.value) : Promise.resolve(x.value).then(fulfilled, rejected);
+    step((generator = generator.apply(__this, __arguments)).next());
+  });
+};
+
 // src/evaluation/evaluation.ts
@@ -57,5 +97,6 @@ var StandardResolutionReasons = {
   constructor(message, options) {
-    super(message, options);
+    super(message);
     Object.setPrototypeOf(this, _OpenFeatureError.prototype);
     this.name = "OpenFeatureError";
+    this.cause = options == null ? void 0 : options.cause;
   }
@@ -66,3 +107,2 @@ };
 var FlagNotFoundError = class _FlagNotFoundError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -78,3 +118,2 @@ super(message, options);
 var GeneralError = class _GeneralError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -90,3 +129,2 @@ super(message, options);
 var InvalidContextError = class _InvalidContextError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -102,3 +140,2 @@ super(message, options);
 var ParseError = class _ParseError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -114,3 +151,2 @@ super(message, options);
 var ProviderFatalError = class _ProviderFatalError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -126,3 +162,2 @@ super(message, options);
 var ProviderNotReadyError = class _ProviderNotReadyError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -138,3 +173,2 @@ super(message, options);
 var TargetingKeyMissingError = class _TargetingKeyMissingError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -150,3 +184,2 @@ super(message, options);
 var TypeMismatchError = class _TypeMismatchError extends OpenFeatureError {
-  code;
   constructor(message, options) {
@@ -249,5 +282,4 @@ super(message, options);
 var SafeLogger = class {
-  logger;
-  fallbackLogger = new DefaultLogger();
   constructor(logger) {
+    this.fallbackLogger = new DefaultLogger();
     try {
@@ -291,12 +323,11 @@ for (const level of LOG_LEVELS) {
     this.globalLogger = globalLogger;
+    this._handlers = {
+      ["PROVIDER_CONFIGURATION_CHANGED" /* ConfigurationChanged */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_CONTEXT_CHANGED" /* ContextChanged */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_READY" /* Ready */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_ERROR" /* Error */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_STALE" /* Stale */]: /* @__PURE__ */ new WeakMap(),
+      ["PROVIDER_RECONCILING" /* Reconciling */]: /* @__PURE__ */ new WeakMap()
+    };
   }
-  _handlers = {
-    ["PROVIDER_CONFIGURATION_CHANGED" /* ConfigurationChanged */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_CONTEXT_CHANGED" /* ContextChanged */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_READY" /* Ready */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_ERROR" /* Error */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_STALE" /* Stale */]: /* @__PURE__ */ new WeakMap(),
-    ["PROVIDER_RECONCILING" /* Reconciling */]: /* @__PURE__ */ new WeakMap()
-  };
-  _eventLogger;
   // here we use E, to restrict the events a provider can manually emit (PROVIDER_CONTEXT_CHANGED is emitted by the SDK)
@@ -307,9 +338,10 @@ emit(eventType, context) {
   addHandler(eventType, handler) {
-    const asyncHandler = async (details) => {
+    const asyncHandler = (details) => __async(this, null, function* () {
+      var _a;
       try {
-        await handler(details);
+        yield handler(details);
       } catch (err) {
-        this._logger?.error("Error running event handler:", err);
+        (_a = this._logger) == null ? void 0 : _a.error("Error running event handler:", err);
       }
-    };
+    });
     const existingAsyncHandlers = this._handlers[eventType].get(handler);
@@ -343,3 +375,4 @@ this._handlers[eventType].set(handler, [...existingAsyncHandlers || [], asyncHandler]);
   get _logger() {
-    return this._eventLogger ?? this.globalLogger?.();
+    var _a, _b;
+    return (_b = this._eventLogger) != null ? _b : (_a = this.globalLogger) == null ? void 0 : _a.call(this);
   }
@@ -372,10 +405,12 @@ };
     this._status = _status;
-    _provider.events?.addHandler("PROVIDER_READY" /* Ready */, () => {
+    this._pendingContextChanges = 0;
+    var _a, _b, _c;
+    (_a = _provider.events) == null ? void 0 : _a.addHandler("PROVIDER_READY" /* Ready */, () => {
       this._status = _statusEnumType.READY;
     });
-    _provider.events?.addHandler("PROVIDER_STALE" /* Stale */, () => {
+    (_b = _provider.events) == null ? void 0 : _b.addHandler("PROVIDER_STALE" /* Stale */, () => {
       this._status = _statusEnumType.STALE;
     });
-    _provider.events?.addHandler("PROVIDER_ERROR" /* Error */, (details) => {
-      if (details?.errorCode === "PROVIDER_FATAL" /* PROVIDER_FATAL */) {
+    (_c = _provider.events) == null ? void 0 : _c.addHandler("PROVIDER_ERROR" /* Error */, (details) => {
+      if ((details == null ? void 0 : details.errorCode) === "PROVIDER_FATAL" /* PROVIDER_FATAL */) {
         this._status = _statusEnumType.FATAL;
@@ -387,3 +422,2 @@ } else {
   }
-  _pendingContextChanges = 0;
   get provider() {
@@ -412,10 +446,9 @@ return this._provider;
 var OpenFeatureCommonAPI = class {
-  _hooks = [];
-  _context = {};
-  _logger = new DefaultLogger();
-  _clientEventHandlers = /* @__PURE__ */ new Map();
-  _domainScopedContext = /* @__PURE__ */ new Map();
-  _clientEvents = /* @__PURE__ */ new Map();
-  _runsOn;
   constructor(category) {
+    this._hooks = [];
+    this._context = {};
+    this._logger = new DefaultLogger();
+    this._clientEventHandlers = /* @__PURE__ */ new Map();
+    this._domainScopedContext = /* @__PURE__ */ new Map();
+    this._clientEvents = /* @__PURE__ */ new Map();
     this._runsOn = category;
@@ -463,2 +496,3 @@ }
     [.../* @__PURE__ */ new Map([[void 0, this._defaultProvider]]), ...this._domainScopedProviders].forEach((keyProviderTuple) => {
+      var _a;
       const domain = keyProviderTuple[0];
@@ -472,3 +506,3 @@ const provider = keyProviderTuple[1].provider;
         } catch (err) {
-          this._logger?.error("Error running event handler:", err);
+          (_a = this._logger) == null ? void 0 : _a.error("Error running event handler:", err);
         }
@@ -502,4 +536,5 @@ }
   setAwaitableProvider(domainOrProvider, providerOrUndefined) {
+    var _a, _b, _c, _d, _e, _f, _g, _h;
     const domain = stringOrUndefined(domainOrProvider);
-    const provider = objectOrUndefined(domainOrProvider) ?? objectOrUndefined(providerOrUndefined);
+    const provider = (_a = objectOrUndefined(domainOrProvider)) != null ? _a : objectOrUndefined(providerOrUndefined);
     if (!provider) {
@@ -528,10 +563,12 @@ this._logger.debug("No provider defined, ignoring setProvider call");
     if (typeof provider.initialize === "function" && !this.allProviders.includes(provider)) {
-      initializationPromise = provider.initialize?.(domain ? this._domainScopedContext.get(domain) ?? this._context : this._context)?.then(() => {
+      initializationPromise = (_e = (_d = (_c = provider.initialize) == null ? void 0 : _c.call(provider, domain ? (_b = this._domainScopedContext.get(domain)) != null ? _b : this._context : this._context)) == null ? void 0 : _d.then(() => {
+        var _a2;
         wrappedProvider.status = this._statusEnumType.READY;
         this.getAssociatedEventEmitters(domain).forEach((emitter) => {
-          emitter?.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
+          emitter == null ? void 0 : emitter.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
         });
-        this._apiEmitter?.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
-      })?.catch((error) => {
-        if (error?.code === "PROVIDER_FATAL" /* PROVIDER_FATAL */) {
+        (_a2 = this._apiEmitter) == null ? void 0 : _a2.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
+      })) == null ? void 0 : _e.catch((error) => {
+        var _a2;
+        if ((error == null ? void 0 : error.code) === "PROVIDER_FATAL" /* PROVIDER_FATAL */) {
           wrappedProvider.status = this._statusEnumType.FATAL;
@@ -542,14 +579,14 @@ } else {
         this.getAssociatedEventEmitters(domain).forEach((emitter) => {
-          emitter?.emit("PROVIDER_ERROR" /* Error */, {
+          emitter == null ? void 0 : emitter.emit("PROVIDER_ERROR" /* Error */, {
             clientName: domain,
             domain,
             providerName,
-            message: error?.message
+            message: error == null ? void 0 : error.message
           });
         });
-        this._apiEmitter?.emit("PROVIDER_ERROR" /* Error */, {
+        (_a2 = this._apiEmitter) == null ? void 0 : _a2.emit("PROVIDER_ERROR" /* Error */, {
           clientName: domain,
           domain,
           providerName,
-          message: error?.message
+          message: error == null ? void 0 : error.message
         });
@@ -561,5 +598,5 @@ throw error;
       emitters.forEach((emitter) => {
-        emitter?.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
+        emitter == null ? void 0 : emitter.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
       });
-      this._apiEmitter?.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
+      (_f = this._apiEmitter) == null ? void 0 : _f.emit("PROVIDER_READY" /* Ready */, { clientName: domain, domain, providerName });
     }
@@ -573,4 +610,4 @@ if (domain) {
     if (!this.allProviders.includes(oldProvider)) {
-      oldProvider?.onClose?.()?.catch((err) => {
-        this._logger.error(`error closing provider: ${err?.message}, ${err?.stack}`);
+      (_h = (_g = oldProvider == null ? void 0 : oldProvider.onClose) == null ? void 0 : _g.call(oldProvider)) == null ? void 0 : _h.catch((err) => {
+        this._logger.error(`error closing provider: ${err == null ? void 0 : err.message}, ${err == null ? void 0 : err.stack}`);
       });
@@ -581,6 +618,7 @@ }
   getProviderForClient(domain) {
+    var _a, _b;
     if (!domain) {
       return this._defaultProvider.provider;
     }
-    return this._domainScopedProviders.get(domain)?.provider ?? this._defaultProvider.provider;
+    return (_b = (_a = this._domainScopedProviders.get(domain)) == null ? void 0 : _a.provider) != null ? _b : this._defaultProvider.provider;
   }
@@ -596,10 +634,12 @@ buildAndCacheEventEmitterForClient(domain) {
     Object.values(ClientProviderEvents).forEach(
-      (eventType) => clientProvider.events?.addHandler(eventType, async (details) => {
-        newEmitter.emit(eventType, {
-          ...details,
-          clientName: domain,
-          domain,
-          providerName: clientProvider.metadata.name
-        });
-      })
+      (eventType) => {
+        var _a;
+        return (_a = clientProvider.events) == null ? void 0 : _a.addHandler(eventType, (details) => __async(this, null, function* () {
+          newEmitter.emit(eventType, __spreadProps(__spreadValues({}, details), {
+            clientName: domain,
+            domain,
+            providerName: clientProvider.metadata.name
+          }));
+        }));
+      }
     );
@@ -623,51 +663,63 @@ return newEmitter;
   transferListeners(oldProvider, newProvider, domain, emitters) {
-    this._clientEventHandlers.get(domain)?.forEach((eventHandler) => oldProvider.events?.removeHandler(...eventHandler));
+    var _a;
+    (_a = this._clientEventHandlers.get(domain)) == null ? void 0 : _a.forEach((eventHandler) => {
+      var _a2;
+      return (_a2 = oldProvider.events) == null ? void 0 : _a2.removeHandler(...eventHandler);
+    });
     const newClientHandlers = Object.values(ClientProviderEvents).map((eventType) => {
-      const handler = async (details) => {
+      const handler = (details) => __async(this, null, function* () {
         emitters.forEach((emitter) => {
-          emitter?.emit(eventType, { ...details, clientName: domain, domain, providerName: newProvider.metadata.name });
+          emitter == null ? void 0 : emitter.emit(eventType, __spreadProps(__spreadValues({}, details), { clientName: domain, domain, providerName: newProvider.metadata.name }));
         });
-        this._apiEmitter.emit(eventType, {
-          ...details,
+        this._apiEmitter.emit(eventType, __spreadProps(__spreadValues({}, details), {
           clientName: domain,
           domain,
           providerName: newProvider.metadata.name
-        });
-      };
+        }));
+      });
       return [eventType, handler];
     });
     this._clientEventHandlers.set(domain, newClientHandlers);
-    newClientHandlers.forEach((eventHandler) => newProvider.events?.addHandler(...eventHandler));
+    newClientHandlers.forEach((eventHandler) => {
+      var _a2;
+      return (_a2 = newProvider.events) == null ? void 0 : _a2.addHandler(...eventHandler);
+    });
   }
-  async close() {
-    try {
-      await this?._defaultProvider.provider?.onClose?.();
-    } catch (err) {
-      this.handleShutdownError(this._defaultProvider.provider, err);
-    }
-    const wrappers = Array.from(this._domainScopedProviders);
-    await Promise.all(
-      wrappers.map(async ([, wrapper]) => {
-        try {
-          await wrapper?.provider.onClose?.();
-        } catch (err) {
-          this.handleShutdownError(wrapper?.provider, err);
-        }
-      })
-    );
-  }
-  async clearProvidersAndSetDefault(defaultProvider) {
-    try {
-      await this.close();
-    } catch (err) {
-      this._logger.error("Unable to cleanly close providers. Resetting to the default configuration.");
-    } finally {
-      this._domainScopedProviders.clear();
-      this._defaultProvider = new ProviderWrapper(
-        defaultProvider,
-        this._statusEnumType.NOT_READY,
-        this._statusEnumType
+  close() {
+    return __async(this, null, function* () {
+      var _a, _b;
+      try {
+        yield (_b = (_a = this == null ? void 0 : this._defaultProvider.provider) == null ? void 0 : _a.onClose) == null ? void 0 : _b.call(_a);
+      } catch (err) {
+        this.handleShutdownError(this._defaultProvider.provider, err);
+      }
+      const wrappers = Array.from(this._domainScopedProviders);
+      yield Promise.all(
+        wrappers.map((_0) => __async(this, [_0], function* ([, wrapper]) {
+          var _a2, _b2;
+          try {
+            yield (_b2 = wrapper == null ? void 0 : (_a2 = wrapper.provider).onClose) == null ? void 0 : _b2.call(_a2);
+          } catch (err) {
+            this.handleShutdownError(wrapper == null ? void 0 : wrapper.provider, err);
+          }
+        }))
       );
-    }
+    });
   }
+  clearProvidersAndSetDefault(defaultProvider) {
+    return __async(this, null, function* () {
+      try {
+        yield this.close();
+      } catch (err) {
+        this._logger.error("Unable to cleanly close providers. Resetting to the default configuration.");
+      } finally {
+        this._domainScopedProviders.clear();
+        this._defaultProvider = new ProviderWrapper(
+          defaultProvider,
+          this._statusEnumType.NOT_READY,
+          this._statusEnumType
+        );
+      }
+    });
+  }
   get allProviders() {
@@ -681,3 +733,3 @@ return [
     this._logger.error(`Error during shutdown of provider ${provider.metadata.name}: ${err}`);
-    this._logger.error(err?.stack);
+    this._logger.error(err == null ? void 0 : err.stack);
   }
@@ -684,0 +736,0 @@ };

dist/types.d.ts

@@ -546,4 +546,12 @@ type FlagValueType = 'boolean' | 'string' | 'number' | 'object';
 
+/**
+ * Error Options were added in ES2022. Manually adding the type so that an
+ * earlier target can be used.
+ */
+type ErrorOptions = {
+    cause?: unknown;
+};
 declare abstract class OpenFeatureError extends Error {
     abstract code: ErrorCode;
+    cause?: unknown;
     constructor(message?: string, options?: ErrorOptions);
@@ -550,0 +558,0 @@ }

package.json

 {
   "name": "@openfeature/core",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "description": "Shared OpenFeature JS components (server and web)",
@@ -22,4 +22,4 @@ "main": "./dist/cjs/index.js",
     "type": "tsc --project ./tsconfig.json --declaration --emitDeclarationOnly",
-    "build:esm": "esbuild src/index.ts --bundle --external:events --sourcemap --target=es2022 --format=esm --outfile=./dist/esm/index.js --analyze",
-    "build:cjs": "esbuild src/index.ts --bundle --external:events --sourcemap --target=es2022 --format=cjs --outfile=./dist/cjs/index.js --analyze",
+    "build:esm": "esbuild src/index.ts --bundle --external:events --sourcemap --target=es2015 --format=esm --outfile=./dist/esm/index.js --analyze",
+    "build:cjs": "esbuild src/index.ts --bundle --external:events --sourcemap --target=es2015 --format=cjs --outfile=./dist/cjs/index.js --analyze",
     "build:rollup-types": "rollup -c ../../rollup.config.mjs",
@@ -49,2 +49,2 @@ "build": "npm run clean && npm run build:esm && npm run build:cjs && npm run build:rollup-types",
   ]
-}
+}

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